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runtime-cache

Skill

Vercel Runtime Cache API guidance — ephemeral per-region key-value cache with tag-based invalidation. Shared across Functions, Routing Middleware, and Builds. Use when implementing caching strategies beyond framework-level caching.

0Backend

Install

git clone https://github.com/vercel/vercel-plugin.git ~/.claude/skills/runtime-cache

What is runtime-cache?

Vercel Runtime Cache API guidance — ephemeral per-region key-value cache with tag-based invalidation. Shared across Functions, Routing Middleware, and Builds. Use when implementing caching strategies beyond framework-level caching.

What this can do

Capabilities declared in this component's own frontmatter — not inferred.

Inherit all session tools

Declares no tool restrictions — inherits every session tool

~58 tokens of context used while enabled, before you invoke anything

Documentation

README · ~4 min read

Vercel Runtime Cache API

You are an expert in the Vercel Runtime Cache — an ephemeral caching layer for serverless compute.

What It Is

The Runtime Cache is a per-region key-value store accessible from Vercel Functions, Routing Middleware, and Builds. It supports tag-based invalidation for granular cache control.

  • Regional: Each Vercel region has its own isolated cache
  • Isolated: Scoped per project AND per deployment environment (preview vs production)
  • Persistent across deployments: Cached data survives new deploys; invalidation via TTL or expireTag
  • Ephemeral: Fixed storage limit per project; LRU eviction when full
  • Framework-agnostic: Works with any framework via @vercel/functions

Key APIs

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